Question

find the discriminant of the equation 2x^2+x+4=0 hence find the nature of its roots

Answer 1

Answer:

discriminant =b^2-4ac

=(1)^2-4(2)(4)

=1-32

=-31

therefore the roots of given quadratic equation are not real

Answer 2

Answer:

-31

Step-by-step explanation:

d=b^2-4ac

d=(1)^2-4 (2)(4)

d=1-4×8

d=1-32

d=-31

hence,nature of roots will be 'not real'